Seeding was invented to protect the box office

Separating the best players in a draw was never about fairness, and the modern arguments for it are mostly retrofitted.

A pure random draw in a knockout tournament will, quite often, put the two best players in the first round. One of them goes home on the opening day. The remaining rounds are then contested by people who happened to draw a kinder path, and the final is between the third and eleventh best players present.

Everyone involved in running tournaments recognised this as a problem long before anyone had a formal argument against it, because it emptied the stands in the second week.

Seeding is the fix: place the strongest entrants in separate parts of the draw so they cannot meet until late. Tennis adopted a version of it early in the twentieth century and the practice spread everywhere a knockout format existed. The justification offered now is competitive fairness, the idea that a tournament should be won by the best player and a random draw introduces noise that has nothing to do with quality.

That argument is decent but it is not the original one, and it is weaker than people think. A knockout tournament is a noisy instrument no matter how you arrange it. Seeding does not remove the noise, it relocates it, concentrating the randomness in the earlier rounds where the seeded player is more likely to survive it anyway. What it reliably delivers is a strong late schedule, which is what the ticketing and broadcast operation needs.

The interesting cost is what seeding does to the ranking system underneath it. Once a seeding depends on ranking points, and ranking points depend on how far you go in seeded draws, the system starts protecting incumbents. A high seed gets an easier path, wins more matches, keeps the ranking, keeps the seeding. It is a mild feedback loop and it is real, and it is one reason breakthroughs by unseeded players feel rarer than the talent distribution would predict.

I would still seed. The alternative is genuinely worse and I have watched enough first-round eliminations of the best player in a competition to know how flat the rest of the week feels.

But sport should be honest about the pedigree of the idea. It was not written by a statistician. It was written by someone who had a stadium to fill on the second Saturday.